Appearance:
White or almost white crystalline powder.
Content (HPLC):
"on dry": 95.0 - 102 .0%.
Absorbance (Ph.Eur.):
264 nm: 225 - 250.
330 nm: ≤ 0.05.
pH:
4.0 - 6.0.
Water (Karl Fischer):
4.2 - 6.0%.
Dimethylaniline:
Absent.
Bulk density (USP):
0.55 - 0.65 g/ml.
Shelf-life:
Minimum 4 years in the original packaging under
'storage conditions'.
Storage conditions:
Below 25 ºC, protected from light and moisture.